I have a Tungsten T5 which won't stay on. My dog chewed up the power cable, so I'm trying to use the hotsync USB cable to charge it. It seems to be working but it won't stay on after it starts up. At first it would go to the Time & Date selection, then say key lock is enabled and shut down. So I did a hard reset. Now it's going to the "Charge Batteries" screen and shutting off. Could it be that the battery is just so dead it won't stay on? Note, it's connected via usb to my computer each time i try to turn it on. I figured the power from the cable would be enough to keep it running even if the batteries are dead. Is this true? Thanks for the help! Also, just an odd tid bit. I decided to take it apart using gethightech.com's instruction video, but when I watched the T5 video, the hardware inside didn't match what I had! I watched the TX video, and it has the exact same hardware that's inside my T5! What's up with that?! EDIT: Forgot to mention the power button is not working, I've been having to start it using the reset button. Don't know how I forgot that... I bet that means it's fried, huh?